diff --git a/pkgs/development/python-modules/mypyllant/default.nix b/pkgs/development/python-modules/mypyllant/default.nix
new file mode 100644
index 000000000000..77f1f0c9980f
--- /dev/null
+++ b/pkgs/development/python-modules/mypyllant/default.nix
@@ -0,0 +1,73 @@
+{
+  buildPythonPackage,
+  fetchFromGitHub,
+  lib,
+
+  # build-system
+  hatch-vcs,
+  hatchling,
+
+  # dependencies
+  aiohttp,
+  pydantic,
+
+  # tests
+  aioresponses,
+  country-list,
+  freezegun,
+  pytest-asyncio,
+  pytest-cov-stub,
+  pytest-mock,
+  pytest-xdist,
+  pytestCheckHook,
+  pyyaml,
+  requests,
+}:
+
+buildPythonPackage rec {
+  pname = "mypyllant";
+  version = "0.9.8";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "signalkraft";
+    repo = "myPyllant";
+    tag = "v${version}";
+    hash = "sha256-eneAFJ4xRL8EKj8Act/YcW7Gx0B85u0g3LTWPlI/B/0=";
+  };
+
+  build-system = [
+    hatch-vcs
+    hatchling
+  ];
+
+  dependencies = [
+    aiohttp
+    pydantic
+  ];
+
+  nativeCheckInputs = [
+    aioresponses
+    country-list
+    freezegun
+    pytest-asyncio
+    pytest-cov-stub
+    pytest-mock
+    pytest-xdist
+    pytestCheckHook
+    pyyaml
+    requests
+  ];
+
+  pythonImportsCheck = [
+    "myPyllant"
+  ];
+
+  meta = {
+    description = "Python library to interact with the API behind the myVAILLANT app";
+    homepage = "https://github.com/signalkraft/myPyllant";
+    changelog = "https://github.com/signalkraft/myPyllant/releases/tag/${src.tag}";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ urbas ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 1affacb053db..8cc15e7f89b4 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -10433,6 +10433,8 @@ self: super: with self; {
 
   mypy-protobuf = callPackage ../development/python-modules/mypy-protobuf { };
 
+  mypyllant = callPackage ../development/python-modules/mypyllant { };
+
   mysql-connector = callPackage ../development/python-modules/mysql-connector { };
 
   mysqlclient = callPackage ../development/python-modules/mysqlclient { };